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首页> 外文期刊>Plant Disease >First Report of Twig Canker on Peach Caused by Phomopsis amygdali in China
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First Report of Twig Canker on Peach Caused by Phomopsis amygdali in China

机译：中国枝条桃金娘致桃的枝条溃疡病首次报道

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摘要

During May and June of 2009, canker and twig dieback were observed with 30 to 40% incidence in trees in one peach orchard in Nanhui of Shanghai (cv. YuLu juicy peach) and one orchard (cv. JingXiu yellow peach) in Jiaxin of Zhejiang Province, China. Cankers were generally centrally positioned on the nodes at the base of shoots with sunken, reddish brown/tan-to-silver symptoms. Blight was also observed on a few shoots (1). Five samples were collected from each orchard and isolations were conducted on potato sucrose agar (PSA). Ten isolates were obtained and all had white mycelia on PSA. Black pycnidia, formed in culture, produced two types of conidia: hyaline, fusiform alpha conidia and hyaline, string-like beta conidia. Alpha conidia varied from 5.0 to 6.3 × 1.5 to 2.5 μm and beta conidia ranged from 20 to 25 × 1.2 to 1.5 μm. Morphological characteristics suggested the identity of the fungal isolates to be Phomopsis amygdali.
机译：2009年5月和6月，在上海南汇的一个桃园（郁露多汁的桃子）和浙江的嘉兴的一个果园（静秀黄桃的一个树种）中，溃疡和树枝枯萎的发生率达到30％至40％。中国的省。溃疡病通常位于芽基部的节点中央，具有下沉的红褐色/棕褐色至银灰色的症状。在一些新芽上也观察到了枯萎病（1）。从每个果园收集了五个样品，并在马铃薯蔗糖琼脂（PSA）上进行了分离。获得了十个分离物，并且所有分离物在PSA上均具有白色菌丝体。在培养物中形成的黑瓶虫可产生两种分生孢子：透明质，梭形α分生孢子和透明状，线状β分生孢子。 α分生孢子的范围从5.0到6.3×1.5到2.5μm，β分生孢子的范围从20到25×1.2到1.5μm。形态学特征表明该真菌分离株的身份为扁桃体。

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